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Ultrafast all-optical magnetic switching in NaTb(WO 4 ) 2

Ultrafast all-optical magnetic switching in NaTb(WO 4 ) 2
The operation of an all-optical magnetic switching based on the paramagnetic NaTb(WO 4 ) 2 NaTb ( WO 4 ) 2 crystals is carried out by the time-resolved magneto-optical Faraday effect. Our results demonstrate that the switching time can be as fast as ∼ 500 fs ∼ 500 fs at room temperature. The switching amplitude shows a linear dependence on the excitation intensity, which is proportional to the magnetization induced by the circularly polarized light. Based on the inverse Faraday effect in magneto-optical crystal, the switching mechanisms arising from circular dichroism and birefringence are discussed. By tailoring the magneto-optical properties of NaTb(WO 4 ) 2 NaTb ( WO 4 ) 2 crystal, the switching magnitude can be modulated.
http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.pngApplied Physics LettersAmerican Institute of Physicshttp://www.deepdyve.com/lp/american-institute-of-physics/ultrafast-all-optical-magnetic-switching-in-natb-wo-4-2-5pp9oQkXA9